Clamp.



No. 855,989. PATENTED JUNE 4, 1907.

H. D. SHEAR & U. S. RHODABARGBR.

I CLAMP.

APPLICATION FILED NOV. 16, 1906.

W/ T/VESSES I [NgE/VTORS 1/127, 5/15/12 Af/omeys UNITED STATES PA 'IENTQFFIGE.

HARRY D. SHEAR AND ULYSSES S. RHODABARGER, OF MANNINGTON, WEST VIRGINIA.

CLAMP.

Specification of Letters Patent.

Patented June 4, 1907.

Application filed November 16, 1906- Serial N0. 343,691-

To 0A7 whom it may concern:

Be it known that we, HARRY D. SHEAR and ULYSSES S. RHODABARGER, citizensof the United States of America, residing at Mannington, in the countyof Marion and State of W'est Virginia, have invented certain new anduseful Improvements in Clamps, of which the following is aspecification, reference being had therein to the accompanying drawing.

This invention relates to clamps particularly designed for hoistingcasing tools from wells into the derrick, preparatory to placing orpulling a casing from an oil or gas well.

The primary object of this invention is to provide a clamp which can beeasily and quickly fastened to a casing line, thereby savingconsiderable time in view of the old manner in which casing tools werehoisted from a well. Heretofore an ordinary piece of rope has beenemployed for attaching the casing tools to a casing line this 0 erationbeing very dangerous on account 0 the expansion of the rope and theweight of the easing tools being withdrawn from a well.

A further object of this invention is to pro: vide a simple andinexpensive clamp, that can be easily and quickly attached to varioustools or implements used in an Artesian or oil well, when it isnecessary to withdraw or elevate the tools or implements from the well'W'ith these and other objects in view, which will more readily appear asthe invention is better understood, the same consists in the novelconstruction, combination and arrangement of parts to be hereinaftermore fully described and then specifically pointed out in the appendedclaims.

Referring to the drawing forming part of this specification, likenumerals of reference designate corresponding parts throughout theseveral views, in which:

Figure 1 is a perspective view of our improved clamp, Fig. 2 is a planof the clamp, and Fig. 3 is an edge view partly in section, to show howthe eye is swiveled in the body.

To put our invention into practice, we provide a body 1, substantiallyrectangular in form, and which is cut away on one edge, intermediate itsends, to form at one end of the block a rigid jaw 2, and at the otherend of the block a bearing 3. This bearing is formed with an openingextending therethrough parallel with the longitudinal axis of clampadjacent to the jaw 2.

the body, and in said opening is mounted a screw 5, the outer end ofwhich has a handle 6, preferably T-shaped in form as shown, and on theinner end of which screw there is looselymounted a jaw 7,which coactswith the rigid jaw 2 of the body. The jaw 7 is loosely mounted on thescrew by providing the latter near. its inner end with an annular groove9 into which is received the inner end of a screw 10 projecting throughthe jaw 7 from the outer face thereof. The rigid jaw 2 is provided witha recess 4 on its inner face, and the face of the jaw 7 which confrontsthe recessed face of the jaw 2, is provided with a similar recess 8.

The C-shaped body portion 1 of our improved clamp is provided with aneye 11, said eye being swi veled at the corner of said Connecting withthe eye 11 is an oblong link 12 to which a casing line (not shown) isattached when it is desired to elevate our improved clamp.

As shown, the shank of the eye 1 1 extends through the body of the clampin a direction corresponding with the axial plane of the recesses 4 and8. As said eye is located close to the recess 4, the weight stress, whenthe device is in use for hoisting purposes is on a line approximatingthe axis of the article being hoisted, so that the article is subjectedto but slight, if any, torsional action, where it will not readily bindagainst the walls of the casing. Hence, liability to damage to the toolor article, either by torsional strain or abrading action due to contactof the article and the walls of the casing, is practically avoided.

The clamp is easily and quickly placed in engagement with a tool orimplement, or even a rope or cable, by rotating the screw 5 until thejaw 7 engages'the object to be elevated, said object being firmly heldwithin recesses 4 and 8 of the jaw 2 and the jaw 7 respectively.

The clamp is preferably made of strong and durable metal, and while wehave herein described the clamp as being adapted for use in oil fields,it is obvious that the clamps may be readily used .for various otherpurposes not herein specified.

Such changes inthe details of construction, as are permissible by theappended claims, may be resorted to without departing from the spiritand scope of the invention.

ters Patent, is

What I claim and desire to secure by Let- 1. In a hoisting means, agripping clam adapted to be removably secured to the article to behoisted, an eye swiveled in said clamp adjacent to the gripping jaws,the shank of said eye extending in a plane paral lel with the axis ofthe article being hoisted, and a link loosely mounted in said eye,whereby the weight stress will be on lines approximate the axis of thearticle being hoisted.

2. A clamp of the type described, comprislongitudinal axis of the block,a screw mounted in said threaded opening having a handle on its outerend, a jaw loosely-mounted on the inner end of said screw and lying inthe recess in the block between the rigid jaw member and thebearing-member, said loosely-mounted jaw having a recess in its innerface, an eye swiveled in the block adj acent one corner thereof, theaxis of the shank of the eye extending in a plane parallel with the axisof the article being carried by the clamp and an oblong link carried insaid eye.

In testimony whereof we affix our signatures in the presence of twowitnesses.

HARRY D. SHEAR. ULYSSES S. RHODABARGER. Witnesses:

DAVID WEED, D. J. SToNER.

